--- strace-4.8.org/signal.c
+++ strace-4.8/signal.c
@@ -59,7 +59,9 @@
 #ifdef IA64
 # include <asm/ptrace_offsets.h>
 #endif
+#ifndef POWERPC
 #include <asm/ptrace.h>
+#endif
 
 #if defined(SPARC) || defined(SPARC64) || defined(MIPS)
 typedef struct {
